When I first moved into the Diocese of Canberra and Goulburn, I was intrigued by the image of the pelican with its bill to its chest, showering its young in liquid, found on our Diocesan crest. So began a little research project into the origin of this most curious symbol.
The symbol hearkens back to medieval days and animal bestiary myths of the 12th century and goes by the name of the ‘vulning pelican’ or the ‘pelican-in-her-piety’.
It was once believed that Pelicans were particularly devoted to their young, and that a pelican would wound its own breast (‘vulning’) to feed its young its blood.
From this belief the vulning pelican came to symbolise the passion of Jesus and the Eucharist, as an image of Christ’s redemptive sacrifice.
Thomas Aquinas wrote a Eucharistic hymn Adoro te devote, in 1264, referring to Christ as the ‘pelican of mercy’ or ‘good pelican’ or ‘loving pelican’. And in Shakespeare’s Hamlet Act IV, scene V, Laertes says to the King:
‘To his good friends thus wide I’ll open my arms;
And like the life-rendering pelican,
Repast them with my blood.’
There are similar references in King Lear (Act III, Scene 4) and Richard II (Act II, Scene 1).
Keats also uses the line ‘Nurtured like a pelican brood’ in Endymion. Dante Alighieri refers to Jesus as ‘nostro pelicano’ in The Divine Comedy: Paradise.
There is a darker twist in some earlier myths, that, after they were killed by their angry father, the mother pelican resurrected her dead children with her own blood, or alternatively, the father himself, moved by remorse, resurrects them with his blood.
Skelton’s Armory of Birds (1510) contains this curious passage:
‘Then sayd the pellycane
When my byrdts be slayne
With my bloud I them revyve
Scrypture doth record,
The same dyd our Lord,
And rose from deth to lyve.’
It is, however, a myth that pelicans have ever engaged in this particular act of parental devotion (or destruction) and legends of self-wounding perhaps arose from the way pelicans draw their bill against their chest to release excess water and manipulate prey caught in it. They then transfer macerated food, or regurgitated liquid, to the mouths of their young.
The first associations of the vulning pelican with the Church of England appear to arise with Thomas Cranmer, during his time as Archbishop from 1533–56:
… very soon after he became Archbishop, Cranmer decided to alter his personal arms, apparently wanting something which was distinctively his own. The birds (apparently cranes, in a typical heraldic pun on the family name) were changed to pelicans, to give the symbolism of that bird’s legendary willingness to feed its young with its own blood; this typology of Christ’s blood-shedding for humanity on the cross appealed to the evangelicalism which the Nottinghamshire squire’s son had now embraced … 
Elizabeth 1 of England adopted this symbol, portraying herself as the mother of the Church of England, and is wearing the pelican on her chest in a portrait painted by Nicholas Hilliard in 1573.
Pelicans have also been used extensively in heraldry and the image became linked to the medieval religious feast of Corpus Christi. The universities of Oxford and Cambridge each have colleges named for this religious festival, and both colleges feature pelicans on their coat of arms (created in 1570 for Cambridge at the request of Archbishop Matthew Parker, and possibly in 1574 at Oxford). A pelican sundial was erected in the courtyard of Corpus Christi College in Oxford in 1581.
Thomas Greenwood, who was president of Corpus Christi College in Oxford shortly after Cranmer became one of the Oxford Martyrs in 1556, had in his possession two volumes of Luther’s work, with a presentation inscription to Cranmer, which may or may not hint at a connection between Cranmer and the pelican association at Corpus Christi.
There is some suggestion that the appearance of the pelican on the crest for the Diocese of Canberra and Goulburn was prompted by the abundance of pelicans at Lake George, halfway between the two cities. 
by Alison Payne
1. MacCulloch D., Thomas Cranmer: A Life (Yale University Press; 4th Print edition, 1998).
2. Warren C.A., A Little Foolishness: An Autobiographical History (Church Archivists’ Press, 1993).